Wireless Communication Device and Wireless Communication Method

1. A wireless communication device comprising: a transmitter-receiver unit capable of transmitting and receiving information through a first wireless communication system and a second wireless communication system; a receiver unit capable of receiving information through the first wireless communication system and the second wireless communication system; a setter to set a mode in which the receiver unit is switched from the second wireless communication system to the first wireless communication system at a predetermined timing during a call through the second wireless communication system using at least the transmitter-receiver unit and/or the receiver unit to perform standby processing for the first wireless communication system using the receiver unit; an instruction unit for instructing to switch from a call through the second wireless communication system using the transmitter-receiver unit and/or the receiver unit to a call through the first wireless communication system using the transmitter-receiver unit; and a controller for halting, when the first wireless communication system transitions from a standby state, in which standby processing is performed, to out of service state in the mode set by the setter, the standby processing for the first wireless communication system using the receiver unit, and for performing, when detecting an instruction to switch issued through the instruction unit in the halt state, a system detection process for detecting the first wireless communication system by using the receiver unit.

2. The wireless communication device according to claim 1 , wherein when the first wireless communication system is detected by the system detection process, the controller performs a process for clearing a call through the second wireless communication system and performs a process for transmitting a signal to a party with which the device has been communicating through the second wireless communication system, by using the transmitter-receiver unit through the first wireless communication system.

3. The wireless communication device according to claim 1 , wherein if the first wireless communication system is not detected by the system detection process, the controller outputs a response to the instruction to switch which indicates that switching is impossible.

4. The wireless communication device according to claim 1 , wherein the response indicating that switching is impossible is displayed on a screen.

5. A wireless communication device comprising: a transmitter-receiver unit capable of transmitting and receiving information through a first wireless communication system and a second wireless communication system; a receiver unit capable of receiving information through the first wireless communication system and the second wireless communication system; a setter to set a mode in which the receiver unit is switched from the second wireless communication system to the second wireless communication system at a predetermined timing during a call through the second wireless communication system using at least the transmitter-receiver unit and the receiver unit, and to perform standby processing for the first wireless communication system using the receiver unit; an instruction unit for instructing to switch from a call through the second wireless communication system using the transmitter-receiver unit and the receiver unit to a call through the first wireless communication system using the transmitter-receiver unit; and a controller for halting, when the first wireless communication system transitions from a standby state, in which standby processing is performed, to out of service state in the mode set by the setter, the standby processing for the first wireless communication system using the receiver unit, and for performing, when detecting an instruction to switch issued through the instruction unit in the halt state, a process for clearing the call through the second wireless communication system by using the transmitter-receiver unit and performs a system detection process for detecting the first wireless communication system by using the receiver unit.

6. A wireless communication method using a transmitter-receiver unit capable of transmitting and receiving information through a first wireless communication system and a second wireless communication system and a receiver unit capable of receiving information through the first wireless communication system and the second wireless communication system, comprising the steps of: when the first wireless communication system transitions from a standby state in which standby processing is performed to out of service state in a mode in which the receiver unit is switched from the second wireless communication system to the first wireless communication system at a predetermined timing during a call through the second wireless communication system using at least the transmitter-receiver unit and/or the receiver unit, halting standby processing for the first wireless communication system using the receiver unit; and when an instruction to switch from a call through the second wireless communication system using the transmitter-receiver unit and/or the receiver unit to a call through the first wireless communication system using the transmitter-receiver unit during the halt state, performing a process for detecting the first wireless communication system by using the receiver.

7. A wireless communication method using a transmitter-receiver unit capable of transmitting and receiving information through a first wireless communication system and a second wireless communication system and a receiver unit capable of receiving information through the first wireless communication system and the second wireless communication system, comprising the steps of: when the first wireless communication system transitions from a standby state, in which standby processing is performed, to out of service state in a mode in which the receiver unit is switched from the second wireless communication system to the first wireless communication system at a predetermined timing during a call through the second wireless communication system using at least the transmitter-receiver unit and/or the receiver unit and, halting standby processing for the first wireless communication system using the receiver unit; and when an instruction to switch from a call through the second wireless communication system using the transmitter-receiver unit and/or the receiver unit to a call through the first wireless communication system using the transmitter-receiver unit during the halt state, performing a process for clearing a call through the second wireless communication system by using the transmitter-receiver unit and performing a process for detecting the first wireless communication system by using the receiver.

8. A wireless communication device comprising: a transmitter-receiver unit capable of transmitting and receiving information through a first wireless communication system and a second wireless communication system; a receiver unit capable of receiving information through at least the first wireless communication system and the second wireless communication system; an instruction unit for instructing to switch from a call through the first wireless communication system using the transmitter-receiver unit to a call through the second wireless communication system using the transmitter-receiver unit; and a controller for performing, when an instruction to switch issued through the instruction unit is detected during a call through the first wireless communication system using the transmitter-receiver unit, a system detection process for detecting the second wireless communication system by using the receiver unit.

9. The wireless communication device according to claim 8 , wherein, when the second wireless communication system is detected by the system detection process, the controller performs a process for clearing a call through the first wireless communication system using the transmitter-receiver unit and performs system setting of the second wireless communication system by using the transmitter-receiver unit.

10. The wireless communication device according to claim 9 , wherein, after performing system setting of the second wireless communication system by using the transmitter-receiver unit, the controller performs a process for using the second wireless communication system to call a party with which the device has been communicating through the first wireless communication system.

11. The wireless communication device according to claim 8 , wherein if the second wireless communication system is not detected by the system detection process, the controller outputs a response to the instruction to switch indicating that switching is impossible.

12. The wireless communication device according to claim 11 , wherein the response that indicates that switching is impossible is displayed on a screen.

13. A wireless communication method using a transmitter-receiver unit capable of transmitting and receiving information through a first wireless communication system and a second wireless communication system and a receiver unit capable of receiving information through at least the first wireless communication system and the second wireless communication system, comprising the steps of: making a call through the first wireless communication system using the transmitter-receiver unit; and when an instruction to switch from a call through the first wireless communication system using the transmitter-receiver unit to a call through the second wireless communication system using the transmitter-receiver unit is detected during the call through the first wireless communication system using the transmitter-receiver unit, performing a system detection process for detecting the second wireless communication system by using the transmitter-receiver unit.

14. A wireless communication device comprising: a transmitter-receiver unit capable of transmitting and receiving information through a first wireless communication system and a second wireless communication system; a receiver unit capable of receiving information through at least the first wireless communication system and the second wireless communication system; and a controller for performing, when receiving a message indicating an incoming call of the second wireless communication system through the first wireless communication system during a call through the first wireless communication system using the transmitter-receiver unit, a system detection process for detecting the second wireless communication system by using the receiver unit.

15. The wireless communication device according to claim 14 , wherein when the second wireless communication system is detected by the system detection process, the controller notifies an incoming call of the second wireless communication system.

16. The wireless communication device according to claim 14 , wherein when receiving an instruction to respond to an incoming call of the second wireless communication system, the controller performs a process for clearing a call through the first wireless communication system using the transmitter-receiver unit and uses the transmitter-receiver unit to perform system setting of the second wireless communication system.

17. A wireless communication method using a transmitter-receiver unit capable of transmitting and receiving information through a first wireless communication system and a second wireless communication system and a receiver unit capable of receiving information through at least the first wireless communication system and the second wireless communication system, comprising the steps of: making a call through the first wireless communication system using the transmitter-receiver unit; and when receiving a message indicating an incoming call of the second wireless communication system through the first wireless communication system during a call through the first wireless communication system using the transmitter-receiver unit, performing a system detection process for detecting the second wireless communication system by using the receiver unit.